--- a/configs/single_locale/ash.py
+++ b/configs/single_locale/ash.py
@@ -43,9 +43,12 @@ config = {
         "repo": "https://hg.mozilla.org/build/tools",
         "revision": "default",
         "dest": "tools",
     }, {
         "vcs": "hg",
         "repo": "https://hg.mozilla.org/build/compare-locales",
         "revision": "RELEASE_AUTOMATION"
     }],
+    # purge options
+    'is_automation': True,
+    'purge_minsize': 12,
 }

--- a/configs/single_locale/mozilla-central.py
+++ b/configs/single_locale/mozilla-central.py
@@ -25,9 +25,12 @@ config = {
         "repo": "https://hg.mozilla.org/build/tools",
         "revision": "default",
         "dest": "tools",
     }, {
         "vcs": "hg",
         "repo": "https://hg.mozilla.org/build/compare-locales",
         "revision": "RELEASE_AUTOMATION"
     }],
+    # purge options
+    'is_automation': True,
+    'purge_minsize': 12,
 }

--- a/scripts/desktop_l10n.py
+++ b/scripts/desktop_l10n.py
@@ -17,16 +17,17 @@ import subprocess
 
 # load modules from parent dir
 sys.path.insert(1, os.path.dirname(sys.path[0]))
 
 from mozharness.base.errors import BaseErrorList, MakefileErrorList
 from mozharness.base.script import BaseScript
 from mozharness.base.vcs.vcsbase import VCSMixin
 from mozharness.mozilla.buildbot import BuildbotMixin
+from mozharness.mozilla.purge import PurgeMixin
 from mozharness.mozilla.building.buildbase import MakeUploadOutputParser
 from mozharness.mozilla.l10n.locales import LocalesMixin
 from mozharness.mozilla.mar import MarMixin
 from mozharness.mozilla.mock import MockMixin
 from mozharness.mozilla.release import ReleaseMixin
 from mozharness.mozilla.signing import SigningMixin
 from mozharness.mozilla.updates.balrog import BalrogMixin
 from mozharness.mozilla.mock import ERROR_MSGS
@@ -63,17 +64,17 @@ configuration_tokens = ('branch',
 # are defined at run time and they cannot be enforced in the _pre_config_lock
 # phase
 runtime_config_tokens = ('buildid', 'version', 'locale', 'from_buildid',
                          'abs_objdir', 'abs_merge_dir', 'version', 'to_buildid')
 
 
 # DesktopSingleLocale {{{1
 class DesktopSingleLocale(LocalesMixin, ReleaseMixin, MockMixin, BuildbotMixin,
-                          VCSMixin, SigningMixin, BaseScript,
+                          VCSMixin, SigningMixin, PurgeMixin, BaseScript,
                           BalrogMixin, MarMixin):
     """Manages desktop repacks"""
     config_options = [[
         ['--balrog-config', ],
         {"action": "extend",
          "dest": "config_files",
          "type": "string",
          "help": "Specify the balrog configuration file"}
@@ -511,18 +512,17 @@ class DesktopSingleLocale(LocalesMixin, 
                                    write_to_file=True)
 
     # Actions {{{2
     def clobber(self):
         """clobber"""
         dirs = self.query_abs_dirs()
         clobber_dirs = (dirs['abs_objdir'], dirs['abs_compare_locales_dir'],
                         dirs['abs_upload_dir'])
-        for directory in clobber_dirs:
-            self.rmtree(directory)
+        PurgeMixin.clobber(self, always_clobber_dirs=clobber_dirs)
 
     def pull(self):
         """pulls source code"""
         config = self.config
         dirs = self.query_abs_dirs()
         repos = []
         # replace dictionary for repos
         # we need to interpolate some values:
@@ -1272,17 +1272,16 @@ class DesktopSingleLocale(LocalesMixin, 
 
     def _create_base_dirs(self):
         config = self.config
         dirs = self.query_abs_dirs()
         for make_dir in config.get('make_dirs', []):
             dirname = os.path.join(dirs['abs_objdir'], make_dir)
             self.mkdir_p(dirname)
 
-
     def funsize_props(self):
         """writes funsize info into buildprops.json"""
         # see bug
         funsize_info = {
             'locales': self.query_locales(),
             'branch': self.config['branch'],
             'appName': self.config['appName'],
             'platform': self.config['platform'],